Press

ABSTRACT

A press has a slide, a lower tool and an upper tool which are provided for forming workpieces and each have a top tool and a bottom tool respectively. The top tool of the upper tool and the bottom tool of the lower tool are each fixedly connected with the press stands. The bottom tool of the upper tool and the top tool of the lower tool are each arranged on the slide. The slide can be driven by a linear drive and carries out a lifting movement.

[0001] The invention relates to a press having a slide.

[0002] From Japanese Patent Document JP 10202397, a press is known in which the slide is moved by means of linear motors.

[0003] German Patent Document DE 196 11 612 A1 describes a press system having several presses and/or machining stations arranged behind one another. In this press system, an intermediate tool is arranged between a top tool assigned to the press slide and a bottom tool arranged on a bedplate. On its top side, the intermediate tool is constructed as a bottom tool cooperating with the top tool and, on its underside, the intermediate tool is constructed as a top tool cooperating with the bottom tool.

[0004] It is an object of the present invention to provide a press which, while its construction is as simple as possible, permits an output which is as high as possible.

[0005] According to the invention, this object is achieved by means of the characteristics indicated in claim 1.

[0006] As a result of the fact that the slide, because the two tool halves are arranged on it, cooperates with the upper tool as well as with the lower tool, a considerably increased output occurs in comparison to known solutions, in an ideal case, even twice the output. While the investment requirements are increased only insignificantly, this permits the manufacturing of a far higher number of workpieces. Particularly when the space available in a tool hangar is limited, the advantage of the press according to the invention, specifically the increased output while the space requirements are the same, will have its full effect.

[0007] The linear drive used according to the invention for driving the slide, in this context, results in the advantages of a reliably operating driving possibility for the slide while the construction is simple and the maintenance-friendliness is high.

[0008] Advantageous developments and further developments of the invention are contained in the subclaims as well as in the embodiment whose principle is illustrated in the drawing.

[0009] The single FIGURE shows a press according to the invention.

[0010] A press 1 has a press stand 2 which has an essentially O-shaped construction with a large central opening 3. In the opening 3, a slide 4 is arranged which is driven by a linear drive 5 and thus can carry out a lifting movement. In the present case, the lifting movement of the slide 4 is an up and down movement. Naturally, a lateral movement of the slide 4 would also be conceivable. On at least two of its lateral surfaces, the slide 4 is guided in linear guides 6 with respect to the press stand 2.

[0011] The press 1 has two tools, specifically a lower tool 7 and an upper tool 8. The two tools 7 and 8 are each constructed in two parts, the lower tool 7 having a bottom tool 7 a and a top tool 7 b. In a similar manner, the upper tool 8 is constructed of a bottom tool 8 a and of a top tool 8 b. The bottom tools 7 a and 8 a each cooperate with pertaining top tools 7 b and 8 b for producing workpieces 10 a and 10 b from fed material 9 a and 9 b.

[0012] In this case, the material 9 a is fed to the lower tool 7 in the form of a web through an opening 11 a in the side of the press stand 2. In a similar manner, the feeding of the material 9 b takes place through a lateral opening lib in the press stand 2 which is situated above the opening 11 a.

[0013] The top tool 7 b of the lower tool 7 and the bottom tool 8 a of the upper tool 8 are each assigned to the slide 4. During each downward movement, the top tool 7 b therefore cooperates with the bottom tool 8 a and a workpiece 10 a is produced in the lower tool 7. During the subsequent upward movement of the slide 4, the bottom tool 8 a cooperates with the top tool 7 b and a workpiece 10 b is produced in the upper tool 8.

[0014] In this case, the tools 7 and 8 can carry out punching as well as forming operations on material webs 9 a and 9 b for producing workpieces 10 a and 10 b. Naturally, different as well as identical workpieces 10 a and 10 b can be produced in the tools 7 and 8.

[0015] In a manner which is not shown, a support for the material 9 b supplied to the upper tool 8 may be mounted on the press stands 2 or on the upper tool 8.

[0016] Naturally, it is also possible to supply the material 9 a and 9 b to the press 1 not in the form of webs but to supply already punched-out parts. The openings 11 a and 11 b in the press stands 2 would naturally have to be constructed correspondingly. In this context, the press 1 could also be used in a press working line or a transfer system which naturally could also have several presses constructed in the manner of the press 1. In this manner, a considerable increase of the piece number can be implemented while the investment requirements are increased only insignificantly. 

1. Press (1) having a slide (4) and having a lower tool (7) and an upper tool (8) which are provided for forming workpieces (10) and have one top tool (7 a, 7 b) and one bottom tool (8 a, 8 b) respectively, the top tool (8 a) of the upper tool (8) and the bottom tool (7 b) of the lower tool (7) each being fixedly connected with the press stand (2), the bottom tool (8 a) of the upper tool (8) and the top tool (7 b) of the lower tool (7) each being arranged on the slide (4), and the slide (4) being drivable by a linear drive (5) and carrying out a lifting movement.
 2. Press according to claim 1, characterized in that the lifting movement of the slide (4) is an up and down movement.
 3. Press according to claim 1 or 2, characterized in that the slide (4) is guided on at least two of its lateral surfaces in linear guides (6).
 4. Press according to claim 1, 2 or 3, characterized in that the press stand (2) has an O-shape which is at least approximately completely closed on its sides and is provided with a central opening (3) for housing the slide (4).
 5. Press according to one of claims 1 to 4, characterized in that, for producing workpieces, the feeding of material (9 a, 9 b) takes place through openings (11 a, 11 b) in the lateral surfaces of the press stand (2).
 6. Press according to claim 5, characterized in that a support at least for the material (9 b) supplied to the upper tool (8) exists inside the press stand (2). 